KR101242416B1 - Portable character input device and method using tension change of strings connected to fingers - Google Patents

Abstract

The present invention relates to a portable character input device, and more particularly, to a compact portable character input device capable of inputting characters through a change in tension of a line connected to a finger. A portable character input device according to the present invention includes a first connecting line for connecting a finger to be inserted or attached to a finger, And a tension change analyzing unit for analyzing a change in the tension sensed by the sensing unit and acquiring position information of the input key corresponding to the movement of the finger. According to this aspect of the present invention, it is possible to determine the row of the keyboard through the change of the tension associated with the movement of the user's finger, and obtain the position information of the input key belonging to the determined keyboard row.

Character input, finger, tension

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a portable character input device and method using a change in tension of a line connected to a finger,

The present invention relates to a portable character input device, and more particularly, to a compact portable character input device capable of inputting characters through a change in tension of a line connected to a finger.

[2006-S-058-04, Project Title: Development of Integrated Network / Service Control Technology based on ALL-IP] The present invention is derived from research carried out as part of the IT Growth Driving Technology Development Project of the Ministry of Knowledge Economy. .

As information appliances become more popular, information input methods have also diversified into keyboards, mice, touch screens, and trackballs. Particularly, in the case of a mouse in a compact information home appliance, a touch screen is widely used as an intuitive and efficient input means. However, such a touch screen is not as efficient as a conventional keyboard for text input. That is, the touch screen provides a virtual keyboard that graphically expresses an input key for inputting text such as a character, and detects hand contact with the area of the output key. However, as the size of a touch screen that can be provided as a portable terminal, for example, a small information appliance such as a mobile phone or a PDA, becomes smaller, there is a lot of inconvenience in using a virtual keyboard. In addition, since a user supports a small portable terminal with one hand or both hands and then inputs data such as a character to a virtual keyboard provided on the touch screen, data input is not accurately performed.

To overcome this problem, a removable keyboard has been developed and used. Such a removable keyboard provides an input space of the same size as that of the conventional keyboard, so that data input is easy and accurate. On the other hand, in order to use a removable keyboard, a user must always carry and install the keyboard, .

In order to overcome the other problem, a virtual keyboard technology has been developed which operates by sensing the movement of the user's finger through the glove and the camera that detects movement of the user's finger joints. Gloves that sense the movement of the user's finger joints are inconvenient for the user to carry with him / her all the time, like a removable keyboard, and it is not easy to put them in a pocket because of the bulky gloves. Since the virtual keyboard technology that operates by sensing the movement of the user's finger through the camera uses the camera image, it can not accurately detect the movement of the user's finger in the dark environment, for example, There is a lot of complexity.

The present invention has been made to solve the above problems and it is an object of the present invention to provide a user who is familiar with a general keyboard with the same character input efficiency without any adaptation.

Furthermore, it is an object of the present invention to provide a character input device which is easy to carry.

The above-described technical problem is achieved by the characteristic aspects of the present invention described later. A portable character input device according to the present invention includes a first connecting line for connecting a finger to be inserted or attached to a finger, And a tension change analyzing unit for analyzing a change in the tension sensed by the sensing unit and acquiring position information of the input key corresponding to the movement of the finger.

According to a further aspect of the present invention, the sensing unit includes a second connecting line connected to the first connecting line as a resilient material, and a sensor unit detecting a change in the tension applied to the first connecting line through the second connecting line and converting the detected tension into an electrical signal .

According to a further aspect of the present invention, the mounting portion mounted on the thumb is connected to one first connection line, and the mounting portions mounted on the fingers other than the thumb include mounting portions mounted on fingers adjacent to the sensing portion, 1 The connection lines are connected to each other by an X-letter.

According to a further aspect of the present invention, there is provided a method of adjusting a tension value for each row of a keyboard, which is set for each user through a change in tension generated when a keyboard key is input from a user, And a tension measurement information storage unit in which a change information table is stored.

According to a further aspect of the present invention, when the information on the change in tension, which is converted into an electrical signal, is received from the sensor unit, the tension change analyzer compares the threshold values for each row of the keyboard stored in the tension measurement information storage unit, And a control unit for controlling the operation of the keyboard by referring to the tension change information table stored in the tension measurement information storage unit and referring to the tension information table stored in the tension measurement information storage unit, And a key position information obtaining unit for obtaining position information of an input key related to change information of the input key.

According to this aspect of the present invention, it is possible to determine the row of the keyboard through the change of the tension associated with the movement of the user's finger, and obtain the position information of the input key belonging to the determined keyboard row.

According to a further aspect of the present invention, the tension measurement information storage unit stores a predetermined standard threshold value for each row of the keyboard, and the keyboard row determination unit stores threshold values for each row of the keyboard set for each user in the tension measurement information storage unit If not, a row of the keyboard is determined by a predetermined standard threshold value for each row of the keyboard.

According to this aspect of the present invention, when the threshold values for each row of the keyboard measured for each user are not stored in the tension measurement information storage unit, the row of the keyboard can be determined through the standard threshold values.

As described above, since the mounting portion of the portable character input device according to the present invention is formed of a material such as rubber, it is possible to prevent breakage due to external force. Further, since the mounting portions of the present invention are connected to each other by a line, the user can use the present invention as a decoration line of a cellular phone when not using the present invention. That is, it is very easy for the user to store or carry it in the portable character input device of the present invention. Also, according to the present invention, by sensing only the relative position of the user's finger, the user can perform data input with the same finger movement as that of the normal keyboard without being restricted by the input space.

BRIEF DESCRIPTION OF THE DRAWINGS The foregoing and further aspects of the present invention will become more apparent from the following detailed description of preferred embodiments with reference to the accompanying drawings. Hereinafter, the present invention will be described in detail in order that those skilled in the art can easily understand and reproduce the present invention through these embodiments.

1 is a block diagram of a portable character input device according to an embodiment of the present invention.

Prior to the technical description of the present invention, the portable character input device operates in the same manner in both the right hand and the left hand, and therefore, the portable character input device related to the right hand will be described in detail in the present invention.

1, the portable character input device includes respective mounting portions 0, 1, 2, 3 and 4, first connection lines 101 and 102, a sensing portion 110, a tension change analysis portion 120 And a tension measurement information storage unit 125.

Each of the mounting portions 0, 1, 2, 3, 4 is mounted on a finger and can have a ring or thimble shape, for example, and is realized as a material having excellent elasticity such as rubber, It can be easily prevented from being detached when mounted on the finger of the user. The respective mounting portions 0, 1, 2, 3, 4 are formed corresponding to the respective fingers and include a fixing portion 103 for fixing the first connecting lines 101, 102 to be described later.

The first connecting lines 101 and 102 are attached to or inserted into the fixing portions 103 of the mounting portions 0,1,2,3,4 to connect the mounting portions 0,1,2,3,4, do. According to the embodiment, the mounting part (0) mounted on the thumb is connected to one first connecting line (102). The mounting portions (1,2,3,4) mounted on the fingers other than the thumb are connected to the two first connection lines (101,102). As described above, the mounting portions 1, 2, 3, and 4 mounted on the fingers other than the thumb include the mounting portions 1, 2, 3, and 4 mounted on the fingers adjacent to the sensing portion 110, It is preferable that the two first connection lines 101 and 102 are staggered in an X-shape. For example, the mounting portion 2 mounted on the stop finger is connected to the mounting portion 1 of the index finger adjacent to the sensing portion 110 and the two first connection lines 101 and 102 in an X-shape. In other words, the first connecting line 102, which is mounted or fixed to the mounting portion 0 mounted on the thumb, is connected to the sensing portion 110 through the fixing portion 103 of the mounting portion 1. The first connecting lines 101 and 102 attached to or fixed to the fitting portions 1, 2, 3 and 4 to be mounted on the fingers except for the thumb are disposed on the fingers adjacent to the sensing portion 110, 3 and 4 and connected to the sensing unit 110 through the fixing unit 103 of the final mounting unit 1. [ At this time, the first connecting lines 101 and 102 connecting the mounting portions 0, 1, 2, 3, and 4 have their mounting portions 0, 1, 2, 3, It is preferable to cut it to an appropriate length so as to be arranged in a manner similar to that of FIG. Here, the keyboard may be a general keyboard, such as a Qwerty keyboard. Each of the first connection lines 101 and 102 attached or fixed to the mounting portions 0, 1, 2, 3 and 4 is preferably inserted into the wire guide portion 105 and connected to the sensing portion 110 . Accordingly, the first connecting lines 101 and 102 of the mounting portions 0, 1, 2, 3, and 4 are arranged as one line, so that they are free from the risk of being easily broken by an external force .

The sensing unit 110 senses the change in the tension applied to the first connection lines 101 and 102 inserted in the wire guide portion 105 in accordance with the movement of the finger on which the mounting portions 0, 1, 2, Lt; / RTI > The sensing unit 110 may sense a change in the tension applied to the first connection lines 101 and 102 through the second connection line 111 and the sensor unit 113. The second connecting line 111, which is made of a material having elasticity such as rubber, is connected to the first connecting lines 101 and 102 inserted in the wire guiding portion 105. That is, the first connecting lines 101 and 102 attached or fixed to the mounting portions 0, 1, 2, 3, and 4 are composed of a total of nine connecting lines, and the second connecting line 111 is also composed of a total of nine connecting lines One-to-one correspondence with the nine first connection lines 101, 102.

The sensor unit 130 senses a change in the tension applied to the first connection lines 101 and 102 through the second connection line 111 and converts it into an electrical signal value through A / D conversion. According to an embodiment, the sensor unit 130 may be implemented as a sensor such as a piezoelectric sensor. Such a piezoelectric sensor is a sensor that outputs different voltages according to applied force, and detects a change in tension applied to the first connection lines 1010 and 102 of the present invention and converts them into different electrical signal values. Each of the sensor units 113 may correspond to each of the second connection lines 111 in a one-to-one correspondence, and each of the first connection lines 101, And converts the detected signal into an electrical signal value. However, the present invention is not limited to this, and each of the sensor units 130 may be connected directly to the first connection lines 101 and 102. In this case, it is preferable that each of the first connection lines 101 and 102 is made of a material having elasticity such as rubber.

The tension change analysis unit 120 analyzes the change in the tension sensed by the sensing unit 110 and obtains the position information of the input key of the keyboard corresponding to the movement of the finger. The tension change analyzer 120 may obtain the position information of the input key of the keyboard using the information stored in the tension measurement information storage 125. [ The tension measurement information storage unit 125 stores threshold values for each row of the keyboard set for each user through a change in tension generated when a keyboard key is input from a user and a first connection line 101 for each movement of the remaining fingers , 102 are stored in the tension change information table. In addition, the tension measurement information storage unit 125 preferably stores a predetermined standard threshold value for each row of the keyboard. Here, the keyboard may be a general keyboard, such as a Qwerty keyboard. However, the present invention is not limited to this, and another keyboard may be used depending on conditions to be set. In the case of the Qwerty keyboard, the threshold values for each row of the Qwerty keyboard are divided into a first threshold value for detecting a key input on the A row based on the center row of the keyboard where the A character is located, And a third threshold value for sensing a key input in a numeral and a symbol row. The third threshold value has the largest value, and the first threshold value has the smallest value. By setting the threshold values for each row of the keyboard, it is possible to determine whether the user is an operation related to the key input of the keyboard, thereby preventing malfunction. The tension change information table stored in the tension measurement information storage unit 125 can be implemented as shown in Table 1 below.

Index finger stop Ringer young Thumb direction 2/3/4 up / down top 2/3/4 below 2nd, 3rd below 3rd, 4th below 4th place bottom 2/3/4 2 below, 3/4 3 below, 4 4 below Outside 4th / down

The tension change information table shown in [Table 1] shows the distance change of the first connecting lines 101 and 102 associated with the corresponding finger as the remaining fingers except for the thumb move up, down, left, and right. In the case of the thumb, since there is no upward and downward movements when the key of the keyboard is input, only the left and right motions are performed, so that the mounting portion 0 mounted on the thumb is connected by one first connecting line 102, . As shown in Table 1, when the index finger is moved in the thumb direction, the two first connection lines 101, 102 attached or fixed to the mounting portions 2, 3, 4 mounted on the stop, ) The length increases. More specifically, in the present invention, tension information change information according to the movement of the finger stored in the tension change information table of Table 1 will be described in detail with reference to FIG. 2 through FIG.

FIG. 2 is a view illustrating an example of a change in a tension according to movement of a right-hand little finger according to an embodiment of the present invention. FIG.

As shown, the user can move the little finger of the right hand on which the mounting portion 4 is mounted for key input of the keyboard. In this case, as the little finger moves upward, the distance of the first connecting line 202 of the two first connecting lines 201 and 202 connected to the mounting portion 4 mounted on the little finger increases. On the other hand, the distance of the first connecting line 201 among the two first connecting lines 201 and 202 connected to the mounting portion 4 mounted on the little finger does not greatly increase. That is, it can be seen that as the little finger moves upward, only the length of the first connecting line 102 connected to the upper part of the mounting part 4 on which the little finger is mounted is increased through the tension change information table of [Table 1] .

FIG. 3 is an exemplary view showing a change in tension due to lateral movement of a right-hand small finger according to another embodiment of the present invention.

As shown in the figure, the user can move the little finger of the right hand equipped with the mounting portion 4 to the right for key input of the keyboard. In this case, as the little finger moves to the right, the distance between the two first connecting lines 301 connected to the mounting portion 4 mounted on the little finger and the first connecting line 302 increases equally. That is, as the little finger moves sideways, the first connection line 301 connected in the upper direction of the mounting portion 4 on which the little finger is mounted is connected to the first connection line 301 connected in the downward direction through the tension change information table of [Table 1] It can be seen that the length of the light emitting element 302 increases equally.

FIG. 4 is a view illustrating an example of a change in a tension according to a movement of a right-hand finger of a right-hand finger according to another embodiment of the present invention.

As shown in the figure, the user can move the right finger of the right hand equipped with the mounting portion 3 upward in order to input a key of the keyboard. In this case, the first connecting line 401 connected to the upper portion of the mounting portion 3 mounted on the phantom finger and the second connecting line 401 connected to the lower portion of the mounting portion 4 mounted on the little finger, The length of the first connection line 402 increases equally. On the other hand, the length of the first connecting line 403 connected to the lower portion of the mounting portion 3 mounted on the phantom finger and the length of the first connecting line 404 connected to the upper portion of the mounting portion 40 mounted on the little finger are not increased do. That is, as the ring finger moves in the upward direction, the first connecting line 401 in the upper direction of the mounting portion 3 mounted on the ring finger and the first connecting line 401 mounted on the little finger through the tension change information table in [Table 1] The length of the first connecting line 402 in the downward direction of the first connecting line 402 increases.

As described above, the tension measurement information storage unit 125 stores threshold values for each row of the keyboard and a tension change information table for the first connection lines 101 and 102 for each finger except for the thumb. Accordingly, the tension change analysis unit 120 may use the threshold values for each row of the keyboard stored in the tension measurement information storage unit 125 and the tension change information table for the first connection lines 101 and 102, The position information of the input key can be obtained. The tension change analysis unit 120 may obtain position information of the input key of the keyboard corresponding to the movement of the finger through the keyboard row determining unit 121 and the key position information obtaining unit 123. [

The keyboard row determining unit 121 compares the threshold values of each row of the keyboard stored in the tension measurement information storage 125 with each other when receiving the tension change information converted into an electrical signal from each of the sensor units 113 And determines the row of the keyboard associated with the received tension change information. Such a keyboard row determination unit 121 first determines whether threshold values for each row of the keyboard set for each user are stored through a tension change occurring when a keyboard key is input from the user through the tension measurement information storage unit 125 . As a result of checking, if the threshold values for each row of the keyboard set for each user are stored, the keyboard row determining unit 121 compares the electrical signal values related to the information on the change in tension with the threshold values for each row of the keyboard set for each user Determines the row of the keyboard. On the other hand, if the threshold values for each row of the keyboard set for each user are not stored as a result of the check, the keyboard row determining unit 121 determines the row of the keyboard using predetermined threshold values for each row of the keyboard.

According to one embodiment, when an electrical signal value converted and related to the change information of the tension is received from each of the sensor units 113, the keyboard row determining unit 121 determines And determines the keyboard row corresponding to the received signal value using threshold values for each row of the stored keyboard. First, the keyboard row determination unit 121 checks whether the received signal value is equal to or greater than a third threshold value. As a result of the check, if the received signal value is equal to or greater than the third threshold value, the keyboard row determining unit 121 determines that the number corresponds to the number / symbol row among the rows of the keyboard. On the other hand, if it is determined that the received signal value is less than the third threshold value, the keyboard row determination unit 121 checks whether the received signal value is equal to or greater than the second threshold value. As a result of the check, if the received signal value is equal to or greater than the second threshold, the keyboard row determining unit 121 determines that it corresponds to the Q row or the Z row among the rows of the keyboard. On the other hand, if it is determined that the received signal value is less than the second threshold value, the keyboard row determining unit 121 checks whether the received signal value is equal to or greater than the first threshold value. As a result of the check, if the received signal value is greater than or equal to the first threshold value, the keyboard row determination unit 121 determines that it corresponds to the A row among the rows of the keyboard. On the other hand, if it is determined that the received signal value is less than the first threshold value, it is determined that the finger movement of the user is not related to the key input of the keyboard.

When the row of the keyboard is determined through the keyboard row determination unit 121, the tension change analysis unit 120 obtains the position information of the corresponding input key according to the finger movement of the user through the key position information acquisition unit 123 . When a row of the keyboard is determined from the keyboard row determining unit, the key position information obtaining unit 123 refers to the tension change information table stored in the tension measurement information storage unit 125 and stores the information on the tension change information The position information of the input key is obtained. If the finger movement of the user is determined to correspond to the row A of the keyboard through the keyboard row determining unit 121, the key position information obtaining unit 123 obtains the tension value stored in the tension measurement information storage unit 125, And determines the direction of the finger and the input key indicated by the finger with reference to the change information table. Accordingly, the key position information obtaining unit 123 can obtain the position information of the input key belonging to the row A of the keyboard.

Hereinafter, a method for acquiring position information of an input key to be input by analyzing a tension change of a first connecting line attached or fixed to a mounting portion according to a movement of a finger equipped with a mounting portion will be described in detail.

5 is a flowchart illustrating a method of acquiring location information of an input key according to an embodiment of the present invention.

As shown in the figure, the tension change analyzing apparatus receives the converted electrical signal related to the change in the tension applied to the first connection line from the sensing unit connected to the first connection line (500). Here, the first connection line is attached or fixed to the fixing part of the ring or thimble-type mounting part, and is connected to the mounting part adjacent to itself. According to the embodiment, the mounting portion mounted on the thumb is connected to the mounting portion of the index finger with one first connecting line and connected to the sensing portion. In addition, the mounting part mounted on the remaining fingers except for the thumb is connected to the sensing part by connecting the two first connection lines to the sensing part and the mounting part of the adjacent finger. Each of the first connection lines may be inserted into the wire guide portion and connected to the sensing portion. Preferably, the sensing unit has a sensor for sensing a change in tension in accordance with movement of a finger equipped with a mounting portion to which the first connecting line is attached or fixed, and has a sensor for each of the first connecting lines. Such a sensor senses a change in the tension of the first connection line through a second connection line connected to the first connection line and converts it into an electrical signal. Here, the second connecting line is preferably made of a material having excellent elasticity such as rubber. However, the present invention is not limited to this, and each of the sensors may be directly connected to each first connection line. In this case, each first connection line is preferably made of a material having excellent elasticity such as rubber.

When the converted electrical signal is received from each of the sensors in association with the change in the tension applied to the first connection line, the tension change analyzer compares the threshold values for each row of the keyboard stored in the tension measurement information storage unit And determines a row of the keyboard associated with the received tension change information (510). Here, the threshold values for each row of the keyboard stored in the tension measurement information storage unit are threshold values set by a user or threshold values of a predetermined standard through a change in tension generated when a keyboard key is input from a user. Here, the keyboard may be a general keyboard, such as a Qwerty keyboard. However, the present invention is not limited to this, and another keyboard may be used depending on conditions to be set. In the case of the Qwerty keyboard, the threshold values for each row of the Qwerty keyboard are divided into a first threshold value for detecting a key input on the A row based on the center row of the keyboard where the A character is located, And a third threshold value for sensing a key input in a numeral and a symbol row. The third threshold value has the largest value, and the first threshold value has the smallest value. By setting the threshold values for each row of the keyboard, it is possible to determine whether the user is an operation related to the key input of the keyboard, thereby preventing malfunction. That is, when an electrical signal converted in relation to the change in tension is received from each of the sensors, the tension change analyzer compares the value of the received electrical signal with the threshold value for each row of the keyboard stored in the tension measurement information storage unit Thereby determining the row of the keyboard associated with the tension change information. A method of determining the row of the keyboard by the tension change analyzer will be described in detail below.

Then, when a row of the keyboard is determined, the tension change analyzing apparatus refers to the tension change information table for the first connecting line for each movement of the fingers other than the thumb stored in the tension measurement information storage unit, The location information of the input key related to the change information is obtained (520). Here, the description of the tension change information table has been described in detail with reference to Table 1, and a detailed description thereof will be omitted. According to the embodiment, when it is determined that the finger movement of the user corresponds to the row A of the keyboard, the tension change analysis apparatus refers to the tension change information table as shown in [Table 1] stored in the tension measurement information storage unit, Determines the direction of the input key to which the command is directed. Accordingly, the key position information obtaining unit 123 can obtain the position information of the input key belonging to the row A of the keyboard.

Hereinafter, a method for determining a row of a keyboard associated with tension change information in the above-described tension change analysis apparatus will be described in detail.

6 is a flowchart of a method of determining a row of a keyboard associated with tension change information in accordance with an embodiment of the present invention.

As shown in the figure, when the converted electrical signal is received from each of the sensors in relation to the change in the tension applied to the first connection line, It is checked whether there is a threshold value (600). On the other hand, if it is checked that there are thresholds for each row of the keyboard set for each user in the tension measurement information storage unit, the tension change analyzer selects 610 threshold values for each row of the keyboard set for each user. On the other hand, if it is checked that the threshold values for each row of the keyboard set for each user are not stored in the tension measurement information storage unit, the tension change analyzer selects preset threshold values for each row of the keyboard 620). When thresholds or standard thresholds set for each user are selected, the tension variation analyzer compares the values of the received electrical signals using the third threshold value among the selected threshold values. That is, the tension change analyzing apparatus checks whether the value of the received signal is equal to or greater than the third threshold value, and determines that the value corresponds to the number / symbol row among the rows of the keyboard if the value of the received signal is equal to or greater than the third threshold value (630, 640).

On the other hand, if the received signal value is less than the third threshold value as a result of the check, the tension change analysis device checks whether the received signal value is equal to or greater than a second threshold value (650). As a result of the check, if the received signal value is equal to or greater than the second threshold value, the tension change analysis apparatus determines 660 that it corresponds to Q row or Z row among the rows of the keyboard. On the other hand, if the received signal value is less than the second threshold value as a result of the check, the tension change analysis device checks whether the received signal value is equal to or greater than the first threshold value (670). As a result of the check, if the received signal value is greater than or equal to the first threshold value, the tension change analysis apparatus determines that the line corresponds to row A of the keyboard. If it is determined that the received signal value is less than the first threshold value, the tension change analysis device determines that the finger movement of the user is not a movement related to the key input of the keyboard, Quot ;, " " Thus, when a row of the keyboard is determined, the tension change analysis apparatus determines the direction of the finger and the input key indicated by the finger with reference to the tension change information table stored in the tension measurement information storage unit. Accordingly, the tension change analysis apparatus can determine the row of the keyboard and acquire the position information of the input key belonging to the determined keyboard row.

The present invention has been described with reference to the preferred embodiments.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is defined by the appended claims rather than by the foregoing description, and all differences within the scope of equivalents thereof should be construed as being included in the present invention.

1 is a configuration diagram of a portable character input device according to an embodiment of the present invention;

FIG. 2 is a diagram illustrating a change in tension due to upward movement of a right-hand little finger according to an embodiment of the present invention;

FIG. 3 is an exemplary view showing a change in tension due to lateral movement of a right-hand small finger according to another embodiment of the present invention;

FIG. 4 is a diagram illustrating a change in tension due to upward movement of a right thumb finger according to another embodiment of the present invention;

5 is a flowchart of a method for acquiring location information of an input key according to an embodiment of the present invention.

6 is a flowchart of a method of determining a row of a keyboard associated with tension change information in accordance with an embodiment of the present invention.

Description of the Related Art

100: mounting portion 103:

101, 102, 201, 202, 301, 302, 401, 402, 403, 404:

105: wiring induction unit 110: sensing unit

111: second connecting line 113:

120: tension change sensing unit 121: keyboard row determination unit

123: key position information acquisition unit 125: tension measurement information storage unit

Claims (13)

A mounting portion to be inserted or attached to the finger; A first connecting line attached to the mounting portion and connecting each of the mounting portions corresponding to the respective fingers; A sensing unit configured to sense a change in a tension applied to the first connection line according to movement of the finger attached to the mounting unit; A tension change analyzer for analyzing a change in the tension sensed by the sensing unit and acquiring position information of an input key corresponding to movement of the finger; Wherein the portable character input device comprises: 2. The apparatus of claim 1, wherein the mounting portion comprises: It is a ring or a thimble type, is embodied as elastic material, A fixing unit fixing the first connection line; Wherein the portable character input device comprises: The apparatus of claim 1, wherein the sensing unit comprises: A second connecting line connected to the first connecting line as a resilient material; A sensor unit for sensing a change in tension applied to the first connection line through the second connection line and converting the detected tension change into an electrical signal; Wherein the portable character input device comprises: The method of claim 3, The mounting portion mounted on the thumb of the mounting portion Connected to one first connection line, The mounting portions mounted on the remaining fingers except for the thumb Wherein the mounting portion mounted on the finger adjacent to the sensing portion direction and the two first connection lines are connected to each other by an X-letter. 4. The apparatus of claim 3, wherein the apparatus comprises: Threshold values for each row of the keyboard set for each user and a tension change information table for the first connecting line for each of the fingers other than the thumb are stored through a change in the tension generated when a keyboard key is input from the user A tension measurement information storage unit; Wherein the portable character input device further comprises: The apparatus of claim 5, wherein the tension change analyzer comprises: And a control unit for comparing the threshold values of each of the rows of the keyboard stored in the tension measurement information storage unit and comparing the threshold values for each row stored in the tension measurement information storage unit, A key row determination unit for determining a key row; Acquiring position information of an input key related to the tension change information that is related to the row of the keyboard determined by the keyboard row determination unit and converted into the electrical signal with reference to the tension change information table stored in the tension measurement information storage unit A key position information obtaining unit; Wherein the portable character input device comprises: 6. The apparatus of claim 5, wherein the tension measurement information storage unit comprises: A predetermined standard threshold value is stored for each row of the keyboard, The keyboard row determination unit And determining the row of the keyboard based on a preset threshold value for each row of the keyboard if the threshold values for each row of the keyboard set for each user are not stored in the tension measurement information storage unit Portable character input device. A method for acquiring positional information of an input key to be input by analyzing a tension change of a first connecting line attached to a mounting portion according to movement of a finger equipped with a mounting portion, Receiving a converted electrical signal related to a change in tension applied to the first connection line from the sensing unit connected to the first connection line; Determining a row of the keyboard associated with the received change in tension information by comparing the change information with the threshold value for each row of the keyboard stored in the tension measurement information storage unit, Wow; And determining a row of the keyboard by referring to the tension change information table for the first connection line for each movement of the fingers other than the thumb stored in the tension measurement information storage unit, Acquiring positional information of an input key associated with the tension change information converted into the position information; Wherein the location information of the input key is obtained from the input key. 9. The method of claim 8, The threshold values for each row of the keyboard stored in the tension measurement information storage unit Wherein the threshold value is a predetermined threshold value or a preset threshold value for each user through a change in tension generated when a keyboard key is input from a user. 10. The method of claim 9, wherein determining the row of the keyboard comprises: And a step of checking whether or not there are threshold values for each row of the keyboard set for each user in the tension measurement information storage unit and if there is no threshold value for each row of the keyboard set for each user, And determining the row of the keyboard using the threshold values of the input key. 9. The method of claim 8, wherein determining the row of the keyboard comprises: Checking whether a value of the received electrical signal is greater than a maximum threshold value among the thresholds for each row of the keyboard; Determining as a number / symbol row among the respective rows of the keyboard if the value of the electrical signal is greater than a threshold value as a result of the check; Wherein the location information of the input key is obtained from the input key. 12. The method of claim 11, wherein determining a row of the keyboard comprises: Checking whether the value of the electrical signal is greater than a second highest threshold among the thresholds for each row of the keyboard if the value of the electrical signal is less than a maximum threshold; If the value of the electrical signal is greater than or equal to a second greatest threshold, determining a Z or Q row among the rows of the keyboard; Further comprising the steps of: receiving an input key from the input key; 13. The method of claim 12, wherein determining a row of the keyboard comprises: If the value of the electrical signal is less than a second greatest threshold value, checking whether the electrical signal is smaller than a threshold value among the threshold values for each row of the keyboard; If it is determined that the value of the electrical signal is less than the smallest threshold value as a result of the check, Determining that a value of a signal is not associated with row determination of the keyboard; Further comprising the steps of: receiving an input key from the input key;

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